You can find and download these tracks on several dedicated children's music portals:

Песенка Умки - скачать и слушать бесплатно - Детская

"Pesenka Umki" (Umka's Song) refers to two iconic Soviet cartoon tracks composed by with lyrics by Yuri Yakovlev . 1. Lullaby of the Bear (Kolybelnaya Medveditsy)

"Snow creaks under stiff feet / The blizzard grabs the side / The little tree signals me with lights / A New Year's beacon".